Fauxnix MCP Server: Run Bash-Style Commands on Windows in Claude, Cursor and Other Apps

• Runs a bash-style command on your Windows PC

  Translates a Linux-style command line into PowerShell and runs it on your machine. The shell keeps its folder, variables and arguments between calls, and returns exit codes like bash. The tool name can be changed with FAUXNIX_TOOL_NAME.

  Try: “Find all .log files older than 7 days under the current folder.”

  Runs code · bash

• Runs several known commands in one go

  Compiles a list of commands first, then runs them one after another in the same shell session and returns a result for each step. It stops at the first failure unless you turn that off.

  Try: “Write data.txt, count its bytes, then delete it, all in one batch.”

  Runs code · bash_batch

• Shows the PowerShell for a bash command without running it

  Returns the PowerShell that a bash-style command would become. Nothing is executed.

  Try: “Show me the PowerShell for 'find . -name *.log | wc -l'.”

  Read · fauxnix_translate

• Shows or resets the shell session

  Reports the current folder, tracked environment variables and session ID, or resets the shell to a fresh state.

  Try: “Reset the shell session.”

  Write · fauxnix_session

Watch out for

• It runs any command with your permissions

  The bash and bash_batch tools run commands in a PowerShell session on your PC, including deleting files and starting programs such as git, node and python. Approve commands one by one, or use a separate account or machine. github.com

• The shell keeps state between calls

  Folder, environment variables and exports persist across calls until the session is reset. Check the current folder before you approve destructive commands. github.com

• The installer edits your agent's config

  The fauxnix install command writes the MCP entry into the agent's own settings file (for example the Claude, Codex, OpenCode, Kimi or Qwen config). The optional Claude shell mode builds a replacement bash.exe of about 85 MB and changes a setting. Skip both and use the manual config if you prefer. github.com

• The tool description tells the model to prefer batches

  The bash description says to prefer bash_batch when two or more commands are known, which steers the assistant toward running several commands per approval. github.com

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